Alice (who is visiting from Canada) and I had a lovely sunny day together strolling through the grounds and buildings in Greenwich. The Maritime Museum and Observatory are there - lots to see; lots of history.
These photos show the Time Ball in resting position, then raised, then dropped at 1 pm. Ships used to set their chronometers to this time-keeping mechanism. Indeed, the building is in a prominant position on the bank of the Thames.
There are still a few time balls around the world, e.g. New York Times Square which everyone watches at 1 minute to midnight on New Year's Eve.
Alice noticed the sundog feature in the sky above us as we stood below the time ball on its dome looking upwards.